/*******************************************************************************
 * Copyright 2014 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.ai.tests.pfa.tests.tiled;

import com.badlogic.gdx.ai.pfa.Connection;
import com.badlogic.gdx.utils.Array;

/** A node for a {@link TiledGraph}.
 * 
 * @param <N> Type of node, either flat or hierarchical, extending the {@link TiledNode} class
 * 
 * @author davebaol */
public abstract class TiledNode<N extends TiledNode<N>> {

	/** A constant representing an empty tile */
	public static final int TILE_EMPTY = 0;

	/** A constant representing a walkable tile */
	public static final int TILE_FLOOR = 1;

	/** A constant representing a wall */
	public static final int TILE_WALL = 2;

	/** The x coordinate of this tile */
	public final int x;

	/** The y coordinate of this tile */
	public final int y;

	/** The type of this tile, see {@link #TILE_EMPTY}, {@link #TILE_FLOOR} and {@link #TILE_WALL} */
	public final int type;

	protected Array<Connection<N>> connections;

	public TiledNode (int x, int y, int type, Array<Connection<N>> connections) {
		this.x = x;
		this.y = y;
		this.type = type;
		this.connections = connections;
	}

	public abstract int getIndex ();

	public Array<Connection<N>> getConnections () {
		return this.connections;
	}

}
